LACT (GPU fan control/undervolt utility) 0.70 Released with Intel GPU support

[tpa-pr]

A new version of the LACT GPU control utility has been released as of yesterday and thanks to a kind donation of an ARC A380 from a user, the developer has added Intel dGPU support. This means that LACT can now manage the three major GPU vendors! I've been using this utility for months to undervolt and control the fan curve on my gaming rig's RDNA3 card and it works great, I highly recommend it.

Just note that it requires a recent Linux kernel version (I have not had it work on LTS kernels) and on install:
1) It adds a kernel parameter (at least for AMD GPUs).
2) It installs and activates its own daemon (lactd).

A hardware support chart is on the main github page.

 

[Easy Rhino]

Wow, I didn't know the dev now supports intel GPUs. It already is an awesome way to do some tuning in GNU/Linux!

 

[R-T-B]

I was pleasantly surprised to find you can finally disable zerorpm too on my RX 7950 series, with the kernel 6.13 line.

 

[Rover4444]

BIG NEWS!!!

 

[_roman_]

I just tried it another time with kernel 6.14.4 with the Powercolor 7800XT hellhound graphic card and my gentoo installation.

I took the package from the gentoo overlay guru.

One flaw which is not obvious. Use etc-update to check if you have old lact config init scripts lying around which needs updating = replacement. I had old config files lying around which screwed me over. (gentoo config protect policy)

The software does not mention that amdgpu needs to be a module. Check with modprobe and grep command (just mentioning as the following config file only works wiht a module. i also checked if my kernel had that kernel option hardcoded. there is a line you can hardcode in your .config for your kernel for kernel parameters. I do not use a bootloader. If you use that, check that also)

Also run lact and let it write the config file

Sienna_Cichlid /home/roman # cat /etc/modprobe.d/99-amdgpu-overdrive.conf
options amdgpu ppfeaturemask=0xFFF7FFFF

Another hidden trap -> start the lactd service. I just run it once for testing purposes just now
Static fan control will not work, when you did not disable zero fan mode which is hidden button in Thermals -> Curve

Well finally I can also set the Fan speed. YAY. The fan speed is my concern which did not work in the past. I desire something around 20-30% for my desktop use.

the 6 to 12 Watts jumping idle Wattage is similar to what i see in Windows and what previous tools showed a year ago with the same WHQD monitor.

If the test works, you can add it the deamon to the default run-level. (I will reboot the box another time - and verify)

Sienna_Cichlid /home/roman # rc-update add lactd default
* service lactd added to runlevel default

Note: Gentoo only / openrc init users only - hint: systemd may be a different story